How to print black using color ink

I am low on black ink at the moment but have a full color cartridge. I realise what I wish to do is more expensive than usual but right now I need to print quite a few documents in black but dont think I've enough black ink to do the job. I have an HPDeskjet 2050 3 in 1 printer/scanner and I cant find an option to select to use color to make black. If anyone knows how to do that on this printer please let me know otherwise "I got me some 'splainin to do" tomorrow at work.

Re: How to print black using color ink

Probably you know: mixing many colors together can be white or can be black depending on how we mix them up. There are 3 things on normal printer: grayscale, black only and grayscale off (ie color). I'm not a painter but I believe grayscale will mix colors for you rather than black only.

Just my 2 cents.

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Re: How to print black using color ink

My color ink cartridge completely ran out of cyan (left only with yellow and magenta) and the black ink cartridge was completely emtpy. In order to print an acceptable black and white doucument, I tried different settings until I found the right combination. The output was a very dark purple. The document took about four times as long to print due to the highest dpi setting, but the quality was very good in a pinch.

Keep in mind that the doucument was printed from Adobe; the source document was from MS Word. So, some settings may not appear in other applications. However, a similar approach may be applied to obtain the best result.